i fail.. psp fat over haul

iv got a psp fat, with custom firmware and what not, im not overly good at this stuff and its a little bit bodged, i recently updated the firmware to m33 5.0, all was well i then decided to install a program called ultimate psptube... it loaded but didnt work, after much perusing of forums it was implied i needed a specific kernal, the only one i can find that makes any sence is the 1.5 kernal from the designer of m33, acording to multiple sources i need 3.4 kernal... at this point my mind is melting, would any one with some idea of whats going on be able to tell me how to downgrade to a early version of m33, remove some of these game folders iv got all over the place and get this thing working in some sort of orderd manner?

i do hope ya can follow that cos i cant...